<title>GCC compiler error messages.</title>

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<h1>GCC compiler error messages.</h1>
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This is a list of compiler error messages I have hit and the method used 
to clear them.

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<pre>warning: comparison between pointer and integer</pre>
Maybe OK. This was generated from 'if (strstr(line,"word") != NULL )'
strstr returns NULL or pointers, I was only interested in the fact that a 
string had been found, not where it was.

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<pre>`floppyto.c:782: parse error at end of input</pre>
floppyto.c is the program name, 782 is the line number but it is one
greater then the file length. This is because of unbalanced {} or unbalanced
comments /* */

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<pre>parse error before `printf'</pre>
Missing ; before this statement.

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<pre>Segmentation error.</pre>
You have attempted to access protected storage or overwritten something
important!

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<pre>subscripted value is neither array nor pointer</pre>
Attempted to subscript a scalar variable.

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<pre>`j' undeclared (first use this function)</pre>
Declare the variable.

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<pre>/usr/lib/crt0.o: Undefined symbol _main referenced from text segment</pre>

Generated when main() is missing. I have seen this twice.
<ol>
<li>When there was a syntax error in an included header file.
<li>And when the C source file was missing in the gcc command!
</ol>

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<pre>Undefined symbol _initscr referenced from text segment</pre>
Called a function but have not supplied it or the library 
that contains it with an #include statement.

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<pre>unterminated `#if' conditional</pre>
<a href=SYNTAX/preprocessors.html>#endif</a> preprocessor required.

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<pre>warning: passing arg 1 of `cpystr' makes integer from pointer
without a cast
</pre>
This is the code causing the problem:
<pre>
void cpystr( char item);
main()
{
   char src[]="martin leslie";
   cpystr(src);
}
   cpystr(char item)
{
}
</pre>

It should be....

<pre>
void cpystr( char item[]);
main()
{
   char src[]="martin leslie";
   cpystr(src);
}
   cpystr(char item[])
{
}
</pre>

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<pre>
conflicting types for `Alex'
previous declaration of `Alex'
</pre>

<b>Alex</b> has been declared in two <a href="SYNTAX/enum.html">enum</a> 
statements. Here is the <a href="EXAMPLES/enum3.c">code</a>


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<pre>
parse error before `1'
At top level:
warning: data definition has no type or storage class
parse error before string constant
warning: data definition has no type or storage class
</pre>

There is a conflict between 
<a href="SYNTAX/enum.html">enum</a> 
and
<a href="SYNTAX/define_preprocessor.html">#define</a> 
statements.
Here is the <a href="EXAMPLES/enum4.c">code</a>

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<address><a href="../address.html">Martin Leslie</a> 
</address><p>

